What the #$%^ is going on every time i do a water change.

[kien]

Um.. Could it be that the acro is actually happier after all those changes (new water, new carbon, etc.), and is now showing its true colours? I actually like how it looks now, lighter and less brown. Looks more brown in the older pic of that acro.

As for the xenia, well they do that, as you've observed, I wouldn't worry about them.